Keeping data between ActionResults - asp.net-mvc

Question

I am populating a list based on data returned from a stored procedure, this first occurs in the SpecificArea ActionResult:
public ActionResult SpecificArea(ModelCallDetails call, int id = 0 )
{
ReturnSpecificAreas(call, id);
return PartialView("SpecificArea", listCallDetails);
}
When the list is displayed each row is an actionlink, which will sends the data to the SpecificAreaWorker:
[HttpGet]
public ActionResult SpecificAreaWorker(ModelCallDetails call, int id)
{
TempData["StringOfIds"] = StringOfIds;
ReturnSpecificAreas(call, id);
if (ResponseMessage == "Successful")
{
return PartialView("SpecificArea", listCallDetails);
}
else
{
return RedirectToAction("ViewCall");
}
}
I am wanting to collect the id of each row that is clicked and store them in a list in the model so that I can create a string of id's. However, each time a row in the table is clicked it refreshes the model, and I no longer have a list of ids anymore.
public void ReturnSpecificAreas(ModelCallDetails call, int id)
{
SelectedAffectedServiceID = id;
call.AffectedServiceList.Add(SelectedAffectedServiceID);
foreach (int item in call.AffectedServiceList)
{
if (TempData["StringOfIds"] != null)
{
StringOfIds = TempData["StringOfIds"].ToString();
StringOfIds += string.Join(",", call.AffectedServiceList.ToArray());
}
else
{
StringOfIds += string.Join(",", call.AffectedServiceList.ToArray());
}
}
I have tried to mantain the data in tempdata, but can't manage to execute this -will the tempdata refresh each time the actionlink is clicked? Is there a better way to achieve this?

Answer 1

I believe you are using MVC5? If so, use
System.Web.HttpContext
This gets current request
to save....
System.Web.HttpContext.Current.Application["StringOfIds"] = StringOfIds; //Saves global
System.Web.HttpContext.Current.Session["StringOfIds"] = StringOfIds; //Saves Session
To retrieve...
StringOfIds = (string) System.Web.HttpContext.Current.Application ["StringOfIds"]; //Retrieves from global memory
StringOfIds = (string) System.Web.HttpContext.Current.Session ["StringOfIds"]; //retrieves from session memory
Good luck.